1 // SPDX-License-Identifier: GPL-2.0
2 /*
3 * Analog Devices LTC2947 high precision power and energy monitor over SPI
4 *
5 * Copyright 2019 Analog Devices Inc.
6 */
7 #include <linux/module.h>
8 #include <linux/of.h>
9 #include <linux/regmap.h>
10 #include <linux/spi/spi.h>
11
12 #include "ltc2947.h"
13
14 static const struct regmap_config ltc2947_regmap_config = {
15 .reg_bits = 16,
16 .val_bits = 8,
17 .read_flag_mask = BIT(0),
18 };
19
ltc2947_probe(struct spi_device * spi)20 static int ltc2947_probe(struct spi_device *spi)
21 {
22 struct regmap *map;
23
24 map = devm_regmap_init_spi(spi, <c2947_regmap_config);
25 if (IS_ERR(map))
26 return PTR_ERR(map);
27
28 return ltc2947_core_probe(map, spi_get_device_id(spi)->name);
29 }
30
31 static const struct spi_device_id ltc2947_id[] = {
32 {"ltc2947", 0},
33 {}
34 };
35 MODULE_DEVICE_TABLE(spi, ltc2947_id);
36
37 static struct spi_driver ltc2947_driver = {
38 .driver = {
39 .name = "ltc2947",
40 .of_match_table = ltc2947_of_match,
41 .pm = pm_sleep_ptr(<c2947_pm_ops),
42 },
43 .probe = ltc2947_probe,
44 .id_table = ltc2947_id,
45 };
46 module_spi_driver(ltc2947_driver);
47
48 MODULE_AUTHOR("Nuno Sa <nuno.sa@analog.com>");
49 MODULE_DESCRIPTION("LTC2947 SPI power and energy monitor driver");
50 MODULE_LICENSE("GPL");
51
